V-MAC III.pdf
Transcript of V-MAC III.pdf
-
8/11/2019 V-MAC III.pdf
1/4
SCHEMATICS
AN
D
DIAGRAruS
Vehicle
Electronic
Control Unit
(VECU)
Connectors
The
Vehicle
Electronic
Controf
unit
(VECU)
has
:nree
1B
pin
connectors.
Each
pin
is
marked
on
ihe
rnside
of
the
connector.
To
disconnect
a
ccnnector
from
the
vECU,
press
down
on
the
iang
of
the
harness
connector
and
gently
pull
the
:cnnector
frorn
the VECU.
Be
sure that
the
tonnector
is
aligned
as shown
below
to
avoid
lcnfusion
when
checking
pin
numbers.
The
.onnector
number
and
color
are
shown
as
a
,ef
erence
for
reconnecting
the VECU
to
the
cab
n
arness.
Figure
791
-
VECU
Connectors
VEHICLE
ELECTRONIC
CONTROL
UNIT
(VECU)
CONNECTOR
PIN
DESIGNATIONS
VECU
Connector
J1
Description
lgnition
key
switch
Stader
signal
Buffered
vehicle
speed
output
(Speedometer
Signal)
Buffered
RPM
output (Tachometer
Signal)
Shutdown
override
siqnal
Speed gontrol
OJ/Of
f
s*rcn
rig"ul
Speed
control
SETiDECEL
signail
Speed
control
RESUfv,lE/ACCEL
srgnal
Cfutch
engaged
signal
'
---
Parking
brake
signal
(#t)
Service
brake
signal
Engine
brake
switch
--
low
Engine
brake
switch
-
hictn
Not
used
Fan
clutch
override
Not
used
Not
used
Fuel
level
sensor
srgrriil
16
13
'to
7
4
I
l-l
l-l
l-t
-r
t--r
I-
t-r
t-l
t-r
E
r-r
I-r
16
13
l0
/ 4
I
I-r
I--r
t-l
t-l
f-t
l-t
l-l
I-t
r-r
-l
--r
l--r
l-l r-l
r-l
f-t
l-r
t-r
lu
15
1?
f_)
6
-l
16
13
10 7 4
1
l-l
-r
r-r
E
l-t
t-l
l-l
l-l
t-r
l-t
r-r
I-t
t-r l-r
t--t t-r
-t
r--r
18
15
12
9 i
3
CONNECTORS
PaEe
635
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SCHETI,IATICS
AN
D
DIAG
RAMS
VECU
Connector
J2
PfO
2 (when
selected)
Vehicle
speed
sensor
pLUS
(_)
Vehicle
speed
sensor
Mf
NUS
Parking brake
sign
al
(#2)
cAt'l-T
1
CAI.J
-T2
Description
VECtReference
ground
Transmission-oil
temperature
signal
Front
drive
axle
temperature
signi
Rear
drive
axle
temperature
signaf
Not
used
(spare
relay)
Not
used
Exhaust
temperature
sensor
signal
Exhaust
temperature
sensor
return
PTO
1
selected
Engne
Electronc
control
unt
(EECU)
Connectors
(ASETTM
IEGR
Engine)
The
Engine
Electronc
Control
Unit
(EECU)
has
two
43
pin
connectors.
To
disconnect
a
connectorfrom the
EECU,
pufr
back
on
the
connector
rock
and
gently
pulf
the
connector
back
on
its
heel
and
away
from
the
EECU.
For
easy
reference,
the
following
if
lustration
shows
ean pn
number
as
t
appears
on
the
connector.
Be
sure
that
the
connector
is
aligned
as
shown
below
to
avoid
confusion
when
checking
pin
numbers.
The
connector
number
and
EECU
orientation
are
shown
as
a
reference
fo
r
reconnecting
the
EECu
to
the
engine
harness.
792
-
EEcu
connectors
(ASETTM
rEGR
Engine)
|.
VECU
Connector
J3
J
|
93e
&ta
finfr
high
.llffigEa-t,r,lrbt
Th
ftle,Sss{
fon
s
nstr
refufn
$a
s"O
1spre-*,
re
r
arara
j
Jl5.fl s..rrni
,JatE
l.rrf
B
MUS
i:i
Description
finononfffi-n-n
n-q
EDDDD
rD000iloatrDDrl
F,f,-'o-o-'ffiooooo%1
oo00D
000000
DDDnFET -o"iln"n"rj
CONNEGTORS
Fig
u re
'3qe
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SCHEMATICS
AND
DIAGRAMS
I
ENGNE
ELECTRONIC
CONTROL
UNIT
(EECU)
CONNECTOR
pfN
DESIGNATIONS
(ASETTH
IEGR
ENGTNE)
EECU
Connector
J1
Description
Not
used
(Engine
oil
level
sensor)
Not
used
Not
used
Not
used
Engine oil
temperature
sensor
srgnal
Not
used
Air
conditioning pressure
switch
Waslegate
solenoid
control
Fan
clutch
solenoid
control
Electronic
unit
pump
injecto
r
# 1
Electronic
unit pump
injector
#5
Electronic
unit pump
injector
#O
Not
used
(Engine
oil level
sensor)
Not
used
Boost
ar
pressure
sensor
slgnal
Not
used
Coofant temperature
sensor
signal
Engine
posltion
sensor
return
Engine position
sensor
signal
Engine brake
#2 control
Engine
brake #1
control
EECU
Connector
Jl
PIN
Number
Description
22 Electronic
unit
purnp
injecto
r
#2
23
Electronic
unit
pump
injecto
r
#3
24
Efectronic
unit
pump
injecto
r #4
25
Oil
pressure
sensor
return
26 Temperature
sensor
common
return
27 Intake
air temperature
sensor signal
2B Fuel
temperature
sensor
signal
29 Not
used
30
RPM/TDC
sensor
signal
31 RPM/TDC
sensor return
32
Oil
pressure
sensor voltage
reference
33 Not
used
34
Engine
oil
pressure
sensor
signal
35
Boost
air
pressure
sensor
return
36
Boost
air
pressure
sensor
voltage
reference
37
Not
used
3B
Not
used
39 Not
used
.40
41
Not
used
Rear
bank
electronic
unrt
pump
irrector
sofenoid
voltage
supply
42
Front
bank
electronic
unlt
pump
injector
solenoid
voltage
supply
Not
t-sed
3
Paqe
63
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SCHEMATICS
AN D
DIAGRAMS
EECU Connector
J2
PIN
Number
Description
I
Not used
2
Not used
3
Engine
coolant level
sensor signal
4
Not
used
5
Not used
I
6 Not used
a
Not
used
B
I
J
1939 data
link
high
tJot used
12
volts
f
rom
power
relay
Not
used
o,"*;sg';r*r
Not used
Not used
Not usc-d
fuot
ut"O
I'Jot
used
Not used
-Gr
,;",J
--
lJot
used
-
oiil*,i
1 2
vo
lts f ro
rn
poy/
e:r
r
elay
-ti"i
;e
Chassrs
clround
EECU
Connector
J2
PIN
Number Description
25
Not used
,>
26 Engine coolant
level
sensor
return
>
27
Ambient
air
temperature sensor
return
2B
Not used
29
Ambient
air
temperature
sensor signal
30
Not
used
31 J
1 587 serial
data
link
(+)
32
Not
used
a
33
Not
used
34
Not used
35
l'Jot
used
36
Not
used
37
Not
used
3B J
1
587 serial
data link
(-)
39
J 1 939
data
link low
.10
Not
used
41 12 volts
f
rom
power
relay
42
Not used
43
Chassis ground
'
\
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